A new study wants to blaze a trail in marijuana research, and it’s calling on smokers for help. Eligible marijuana users are invited to participate in a paid, anonymous series of surveys over the course of one year as part of a groundbreaking study in medical marijuana, led by one of the medical field’s most prominent cannabis activists, Dr. Suzanne Sisley. Sisley, in joint effort with the University of Michigan, has also released an alternative,…